I was the one who researched the TSO issue to death -- as related to radios -- and posted to this forum approx. 3 years ago (~Jan. '07, if you're looking in the Archives). The bottom line was that a TSO'd radio is not required in our Ercoupes for VFR operations. Check with Joe Norris at EAA if you (or your maintenance shop) dispute this.
I can only speak definitively to radios, since that was all I was researching (prior to installing an XCOM). Transponders DO have to be TSO'd. It is my belief (though I did not research this broader question to death) that other non-transponder avionics also do not require TSOs in our Ercoupes for Daytime, VFR operations. Where Prof. Ed and others may be getting difficulties from their avionics shops is that the shops (or their insurance carriers) have not researched the issue to death as it applies to planes certificated when ours were. They just make an overly-simple equation that is in fact over-simplified, when they say, "if it's a certificated plane, must use TSO'd instruments." As to our planes it is over-simplified and incorrect. Again, I respectfully suggest you check with Joe Norris at EAA. Arguing what a rule "logically should" be can be an amusing pastime, but is a separate question from finding out what it IS. Linda N3437H (Sky Sprite) L.A. On Jan 13, 2010, at 1:54 PM, [email protected] wrote: > 6i. Re: Re; Instaling NON TSO'd instruments or avionics > Posted by: "[email protected]" [email protected] rascallee > Date: Wed Jan 13, 2010 12:38 pm ((PST)) > > Seems that we must rehash issues every few years just to enhance > the knowledge base. Also interesting how people grasp on to an > idea and hang with it without facts to back it up and throw > meaningless non revelant ideas in to support their view/ > assumption. Makes for interesting reading. Kind of like watching > a movie over and over.Lee Browning
